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    <title>Document</title>
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<body>
    <div id="app">
        输入张三的成绩：<input type="text" v-model="text" name="" id="">
        <h2 v-if="text>=90&&text<=100">张三的成绩优秀</h2>
        <h2 v-if="text>=75&&text<90">张三的成绩良好</h2>
        <h2 v-if="text>=60&&text<75">张三的成绩及格</h2>
        <h2 v-if="text>=0&&text<60">张三的成绩不及格</h2>
    </div>
    <script>
        var app = new Vue({
            el:'#app',
            data: {
                text:''    
            },
            methods:{
            }
        });

    </script>
</body>

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